All around there it’s very dust-colored, so I chose the brightest, most fluorescent colors - orange and pink - and with 40 people we knitted one kilometer of two-foot-wide surveyors’ tape along the bridge. I used the Fibonacci sequence as a basis for the design so it looked like it was curving in and out and up and down.

I'm sorry, but the 'fibonacci sequence blah blah blah' seems like bull to me; it doesn't look like it's curving at all. Just looks like somebody's crazy old grandma got loose and used a bridge to dry her laundry on the day she decided to wash all her blankets.